Island



(No Model.)

n E. H. BALLOU. SHUTTLE MOTION POR LOOMS.

No. 416,543. Patented Deo. 3, 1889.

j UNITED STATEs PATENT OFFICE.

EUGENE l-I. BALLOU, OF PAWTUOKE'I, RHODE ISLAND.,

SHUTTLE-MOTION FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 416,543, dated December 3, .1889.

Application filed October 9, 1888.

To @ZZ 11j/tom, t may concern:

Be it known that I, EUGENE H..BALLoU, of Pawtucket, inthe county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Shuttle- Motions for Looms, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

This invention has reference to an improvement in the class of looms in which a picking-stick is used to throw the shuttle and drop-boxes are employed to raise or lower the shuttles.

The invention consists in the novel and useful device by which the fulcrum against which the picking staif or stick bears is controlled by the drop-boxes and the breaking of the picking-staff prevented, as will be more fully set forth hereinafter.

Referring to the drawings, Figure l is a partial view of one end of the frame of a loom, showing the application of thesafetyfulcrum and its connection with the dropboxes. Fig. 2 is an end View of the pickingstaff and the yielding fulcrum in their relative positions.

Similar numbers of reference indicate corresponding 'parts In the drawings, 5 indicates the end frame rof the loom.

6 indicates the drop-boxes from which the shuttlesare thrown.

7 is the picker stick or staff; 8, the springstrap connected with the lower end of the picker-staff,by which the picker-staff is drawn back after thel upper end has thrown the shuttle from one of the drop-shuttle boxes 6.

9 is the picker-staff strap, one end of which is connected with the picker-cams (not shown) and the other to the picker-staff 7.

The description above recited refers to the usual construction of looms.

secure to the end frame 5 the bracket 10,v

from which the arm 11 extends upward, where it is provided with a lateral projection having a hole in which the box-rod 12 slides. To the box-rod 12 the slide 13 is secured, so that the same will move up and down with the shuttle drop-boxes 6 and the box-rod 12.

-On the slide 13 stops or projections 14 14 are formed. The bracket l0 supports the stepbearing 15, the middle bearing 16, and upper bearing 17 of the vertical shaft 18, and also the bearing 19, in which the slide 13 moves. The vertical shaft 18 is surrounded near its upper end by the coiled spring 20, one end of which is secured to the bracket 16 or bears against the same and the other end to the vertical shaft 18. Projecting from the vertical shaft 18, near its lower end, is the ful-v crum-pin 21, placed at right angles to the axis of the vertical shaft 18, and extending across the path of the picker-staif 7 to form the fulcrum, against which the picker-staff is held by a spring on the end of the strap 8. 'Ihe coiled spring 20 on the vertical shaft 18 is powerful enough to hold the fulcrum-pin 21 against the picker-sta 7 and resist the pull on the foot of the picker-staff, but is not strong enough to resist the pull of the strap 9 on the picker-staff.

To the upper end of the vertical shaft 18 the arm 22 is iirmly secured, extending horizontally from the vertical shaft, so as to bear against one of the wards or projections 14 on t-he slide 13.

I will now more fully describe the operation of my invention.

When the drop-shuttle boxes G are in the proper position to permit one of the shuttles to be thrown across the warp in the loom, the slide 13 will be in the position in which one of the projections 14 is in front of the arm 22. In this condition the arm 22, bearing against the projection 14, locks and holds the vertical .shaft 18 against rota- TOO tion, and ctmsequently locks and holds the fulcrum -pin l Iirmly in front of the pickerstat, which, in the operation of throwing the shuttle, rocks on the fnlcrum-pin 2l. IVhen, now, the shuttle-box or drop-box is either raised or lowered, the arm 22 slides by the space between the projections ll lll, and will allow the vertical shaft to turn as the tension on the lower end of the picker-stati draws the same against the fulcrum-pin 2l, if it were not for the coiled spring 20. Il the shuttle drop-boxes have not moved in the required position to permit a shuttle to be thrown, the projections or stops lt will not be in front of the arm 22 when the pieken statt is drawn quickly in by the strap El, and the strain of the strap 9 is added to the strain on the foot of the picker-statt and against the fulcruni-pin 2l. This strain is greater than the spring 2O can resist, and as the arm 22 is free to turn with the vertical shaft, the projection 14 not being in its path, the Vertical shaft 18 turns, and the fulcrumpin 2l, turning with the vertical shaft 1S, allows the lower part of the picker-static to move past the same toward the end of the loom, thus preventing the breaking of the picker-staff or the strap 9 or injury to the shuttle-throwing mechanism. A slight adjustment will at once restore all the parts to their normal positions, and the loom is again ready for Work. Having thus described my invention, I claim as new and desire to secure byLetters Patentl. The combination, with the drop-boxes of a loom and the picker-statt, of a yielding fulcrnm for the picker-stati?, and a slide provided with projections and moving with the drop-box, constructed to lock and hold the fulcrum against the strain on the picker-staff when the drop-box is in its proper position and permitting the fnlcruln to yield to the strain on the picker-staff when the drop-box is not in the propel' position, as described.

The eombination,with the picker-staff of a loom, ol' a fulcrum held against the picker-statt by the spring 20, a slide connected to and moving with the drop-box (i, provided with projections, and an arm bearing against the projections, constructed to lock and hold the fulcrum when the drop-box is in the required position and to permit the fulerum to yield when the drop-box is not in the proper place to allow the shuttle to be thrown, as described.

3. In a loom, the comlfiination, with the shuttle drop-box 6 and box-rod 12, ot' the slide 13, provided with the projections 14, the picker-stati 7, and mechanism for operating the saine, the vertical shaft 1S, provided with the fulcrum 2l and arm 22, and the spring 20, constructed to permit the fulcrum to yield to excessive strain on the picker-staff when the drop-box is not in its proper place, as described.

In witness whereof I have hereunto set my hand.

EUGENE II. BALLON.

Witnesses:

IIARMON S. BABcoCK. Jos. A. MILLER. 

